Flat-wire spring



'rares essere..

Kn SONS, 0F DERBY, CONNECTICUT.

FLAT-wl RE SPRING.

Specification forming part of Letters Patent No. 50,4120, dated October 10, 1865. y

To all lwhom it may concern;

Beit known that I, HENRY KELLOGG, of

l New Haven, in the county of New Haven and State of Connecticut, haveinvented a new and usefullmprovementin Flat-Wire Springs; and I do hereby declare the following, when taken in connection .with the accompanying drawings and the letters of reference marked thereon, to be a'full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in-

Fgure l, the manner of forming my improved spring, and in Fig. 2 a different ,manner of fiattening.-

My invention relates to an improvement in the construction of flat-wire springs, whereby the springis made elastic both transversely and laterally; and it consists in interweaving two coiled-wire springs and rolling the two flat, so as to unite the two together and form a fiat spring.

To enable others to construct my improved spring, I will proceed to describe my. manner of so doing, as illustrated in the accompanying drawings.

I iirst form two common coil-springs, A B,

'o f the size of wire and the diameterof coil, ac-

cordingtothe width and strength of the spring to be formed. Forming the coils little distance apart, I then insert the coils ofone spring between the coils of the other, as seen in. fifig. 1, then pass' the two between rollers, which will flatten the two and so press the oeils together that they cannot bedisengaged without .breaking the springs, and the appearance of the spring will be as seen in Fig'. 1. lf the two springs are rolled together upon the sides at right angles to that shown in Fig. l, the appearance of the spring will be that as seen in Fig. 2, but the lateral spring will not be as great when rolled in the lastdescribed manner as in the first.

My spring is adapted tomany uses, one of which, and not the least important, is a substitute for whalebones for dresses.

Having, therefore, thus fully described my invention, whatI claim as new and. useful, and desire to secure by Letters Patent, is

The herein-described spring, as a new ari icle of manufacture. HENRY KELLOGG. Witnesses t JOHN E. EARLY, RUFUs H. SANFORD. 

